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Finding the Fourth Proportional to 872,574.42, 1,204,005.97 and 485,339.34

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Solution

The fourth proportional to 872,574.42, 1,204,005.97 and 485,339.34 is: 669,686.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,574.42 : 1,204,005.97 = 485,339.34 : x
  2. Step 2: Convert to fraction form
    872,574.42/1,204,005.97 = 485,339.34/x
  3. Step 3: Cross multiply
    872,574.42x = 1,204,005.97 × 485,339.34
  4. Step 4: Simplify right side
    872,574.42x = 584,351,462,835.86
  5. Step 5: Solve for x
    x = 584,351,462,835.86/872,574.42
  6. Step 6: Final answer
    x = 669,686.68

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.